I so feel like a newbie posting this question, it must be the cold messing with my mind... How would you gather all META keywords from all pages on a website into a neat list, without having to go through each and every page? I use Webceo, but cannot find this option at the moment...
not sure if this will help, but a google search turned it up. Seems to work ok http://www.iwebtool.com/metatags_extractor
I think he wants to do it on a sitewide basis. Keyword Elite does something like this when they generate a keyword list, but I don't think they have the capability to do that separately.